JP2015096921A5 - - Google Patents
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- JP2015096921A5 JP2015096921A5 JP2013237353A JP2013237353A JP2015096921A5 JP 2015096921 A5 JP2015096921 A5 JP 2015096921A5 JP 2013237353 A JP2013237353 A JP 2013237353A JP 2013237353 A JP2013237353 A JP 2013237353A JP 2015096921 A5 JP2015096921 A5 JP 2015096921A5
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- acoustic signal
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- 238000001228 spectrum Methods 0.000 claims 46
- 239000011159 matrix material Substances 0.000 claims 28
- 230000000694 effects Effects 0.000 claims 17
- 238000006243 chemical reaction Methods 0.000 claims 10
- 230000000875 corresponding Effects 0.000 claims 6
- 230000002194 synthesizing Effects 0.000 claims 6
- 238000000354 decomposition reaction Methods 0.000 claims 5
- 230000001276 controlling effect Effects 0.000 claims 4
- 230000015572 biosynthetic process Effects 0.000 claims 3
- 238000003786 synthesis reaction Methods 0.000 claims 3
Claims (15)
前記行列を少なくとも基底行列とアクティビティ行列に分解する分解手段と、
前記基底行列の各列を構成する基底スペクトルの周波数軸上での分布状態に基づいて、前記基底スペクトルを第一の基底スペクトルと第二の基底スペクトルに分類する分類手段と、を備えることを特徴とする音響信号処理装置。 A conversion means for obtaining a matrix obtained by time-frequency conversion of an acoustic signal;
Decomposition means for decomposing the matrix into at least a base matrix and an activity matrix;
Classification means for classifying the base spectrum into a first base spectrum and a second base spectrum based on a distribution state on a frequency axis of a base spectrum constituting each column of the base matrix, An acoustic signal processing device.
前記行列を少なくとも基底行列とアクティビティ行列に分解する分解手段と、
前記基底行列の各列を構成する基底スペクトルの調波成分の大きさに基づいて、前記基底スペクトルを第一の基底スペクトルと第二の基底スペクトルに分類する分類手段と、を備えることを特徴とする音響信号処理装置。 A conversion means for obtaining a matrix obtained by time-frequency conversion of an acoustic signal;
Decomposition means for decomposing the matrix into at least a base matrix and an activity matrix;
Classifying means for classifying the base spectrum into a first base spectrum and a second base spectrum based on the magnitude of the harmonic component of the base spectrum constituting each column of the base matrix; An acoustic signal processing device.
前記第二の基底スペクトルおよび、前記アクティビティ行列の各行を構成するアクティビティベクトルのうち前記第二の基底スペクトルに対応する第二のアクティビティベクトルを用いて、第二の音響復元信号を合成する、合成手段をさらに備え、
前記第一の音響復元信号と前記第二の音響復元信号の少なくとも一方を用いて、前記音響信号から非目的音を除去することを特徴とする請求項1乃至9のいずれか1項に記載の音響信号処理装置。 Using the first base spectrum and the first activity vector corresponding to the first base spectrum among the activity vectors constituting each row of the activity matrix, a first acoustic restoration signal is synthesized,
A synthesis means for synthesizing a second acoustic restoration signal using the second activity vector corresponding to the second basis spectrum among the activity vectors constituting the second basis spectrum and each row of the activity matrix. Further comprising
Using at least one of the first acoustic restoration signal and the second acoustic restoration signal, as claimed in any one of claims 1 to 9, characterized in that the removal of non-target sound from the acoustic signal Acoustic signal processing device.
変換手段が、音響信号を時間周波数変換した行列を得る変換工程と、
分解手段が、前記行列を少なくとも基底行列とアクティビティ行列に分解する分解工程と、
分類手段が、前記基底行列の各列を構成する基底スペクトルの周波数軸上での分布状態に基づいて、前記基底スペクトルを第一の基底スペクトルと第二の基底スペクトルに分類する分類工程と、を有することを特徴とする音響信号処理装置の制御方法。 A method for controlling an acoustic signal processing device, comprising:
A conversion step in which the conversion means obtains a matrix obtained by time-frequency conversion of the acoustic signal;
Decomposition means for decomposing the matrix into at least a base matrix and an activity matrix;
A classifying step for classifying the base spectrum into a first base spectrum and a second base spectrum based on a distribution state on a frequency axis of the base spectrum constituting each column of the base matrix; A method for controlling an acoustic signal processing apparatus, comprising:
変換手段が、音響信号を時間周波数変換した行列を得る変換工程と、
分解手段が、前記行列を少なくとも基底行列とアクティビティ行列に分解する分解工程と、
分類手段が、前記基底行列の各列を構成する基底スペクトルの調波成分の大きさに基づいて、前記基底スペクトルを第一の基底スペクトルと第二の基底スペクトルに分類する分類工程と、を有することを特徴とする音響信号処理装置の制御方法。 A method for controlling an acoustic signal processing device, comprising:
A conversion step in which the conversion means obtains a matrix obtained by time-frequency conversion of the acoustic signal;
Decomposition means for decomposing the matrix into at least a base matrix and an activity matrix;
A classifying means for classifying the base spectrum into a first base spectrum and a second base spectrum based on the magnitude of the harmonic component of the base spectrum constituting each column of the base matrix; A method for controlling an acoustic signal processing device.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013237353A JP6371516B2 (en) | 2013-11-15 | 2013-11-15 | Acoustic signal processing apparatus and method |
US14/527,682 US9704505B2 (en) | 2013-11-15 | 2014-10-29 | Audio signal processing apparatus and method |
Applications Claiming Priority (1)
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JP2013237353A JP6371516B2 (en) | 2013-11-15 | 2013-11-15 | Acoustic signal processing apparatus and method |
Publications (3)
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JP2015096921A JP2015096921A (en) | 2015-05-21 |
JP2015096921A5 true JP2015096921A5 (en) | 2016-12-28 |
JP6371516B2 JP6371516B2 (en) | 2018-08-08 |
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JP2013237353A Active JP6371516B2 (en) | 2013-11-15 | 2013-11-15 | Acoustic signal processing apparatus and method |
Country Status (2)
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US (1) | US9704505B2 (en) |
JP (1) | JP6371516B2 (en) |
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JP6460676B2 (en) | 2014-08-05 | 2019-01-30 | キヤノン株式会社 | Signal processing apparatus and signal processing method |
US9838782B2 (en) * | 2015-03-30 | 2017-12-05 | Bose Corporation | Adaptive mixing of sub-band signals |
WO2016207951A1 (en) * | 2015-06-22 | 2016-12-29 | パイオニア株式会社 | Shunt murmur analysis device, shunt murmur analysis method, computer program, and recording medium |
US10037750B2 (en) * | 2016-02-17 | 2018-07-31 | RMXHTZ, Inc. | Systems and methods for analyzing components of audio tracks |
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JP2019020530A (en) | 2017-07-13 | 2019-02-07 | キヤノン株式会社 | Signal processor, control method and program |
JP6886890B2 (en) * | 2017-08-08 | 2021-06-16 | 株式会社竹中工務店 | Decay time analysis methods, instruments, and programs |
JP7245669B2 (en) * | 2019-02-27 | 2023-03-24 | 本田技研工業株式会社 | Sound source separation device, sound source separation method, and program |
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JP3591068B2 (en) * | 1995-06-30 | 2004-11-17 | ソニー株式会社 | Noise reduction method for audio signal |
JP4761506B2 (en) * | 2005-03-01 | 2011-08-31 | 国立大学法人北陸先端科学技術大学院大学 | Audio processing method and apparatus, program, and audio system |
US8015003B2 (en) * | 2007-11-19 | 2011-09-06 | Mitsubishi Electric Research Laboratories, Inc. | Denoising acoustic signals using constrained non-negative matrix factorization |
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JP5451188B2 (en) | 2009-06-02 | 2014-03-26 | キヤノン株式会社 | Standing wave detection device and control method thereof |
WO2011029048A2 (en) * | 2009-09-04 | 2011-03-10 | Massachusetts Institute Of Technology | Method and apparatus for audio source separation |
JP5516169B2 (en) | 2010-07-14 | 2014-06-11 | ヤマハ株式会社 | Sound processing apparatus and program |
JP5606234B2 (en) | 2010-09-13 | 2014-10-15 | キヤノン株式会社 | Sound equipment |
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